1 Chronicles 22:17-19

17-19 Whatever is done towards rendering the word of God generally known and attended to, is like bringing a stone, or an ingot of gold, towards erecting the temple. This should encourage us when we grieve that we do not see more fruit of our labours; much good may appear after our death, which we never thought of. Let us not then be weary of well doing. The work is in the hands of the Prince of peace. As he, the Author and Finisher of the work, is pleased to employ us as his instruments, let us arise and be doing, encouraging and helping one another; working by his rule, after his example, in dependence on his grace, assured that he will be with us, and that our labour shall not be in vain in the Lord.